452 heads

Those are simple flow numbers anyone can spout, Josh. When you get heads professionally ported, you get a full report that includes flow from low to high RPM along with what lift those flow number are acheived. I would never take anyone's word for it. That's a lot of dough to possibly throw away. I'm not trying to say he's trying to rip anybody off, but if he had the heads professionally ported, he'll have paper work to back it up. If not, I would be leary. PM Justin (1wildandcrazyguy) and see what he thinks. He does port work and he's very good at it.